One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,7)(3,5,10,8)(4,9,12,14)(11,13,16,15)(17,18)(19,21)(20,25)(22,23)(24,27)(26,29)(28,32)(30,31)(33,34)(35,38)(36,44)(37,40)(39,45)(41,43)(42,47)(46,48)(2,7)(4,12)(5,8)(11,16)(18,23)(21,24)(25,31)(29,32)(33,34)(35,41)(36,44)(37,40)(38,43)(39,45)(42,46)(47,48) involution — undirected(2,7)(3,10)(4,12)(13,15)(17,19,22,27)(18,21,23,24)(20,28,30,26)(25,32,31,29)(33,34,37,40)(35,41,43,38)(36,39,45,44)(42,47,48,46)(1,3)(2,8)(4,11)(5,7)(6,10)(9,15)(12,16)(13,14)(17,19)(18,24)(20,26)(21,23)(22,27)(25,32)(28,30)(29,31)(33,34)(35,38)(36,39)(37,40)(41,43)(42,46)(44,45)(47,48) involution — undirected(1,4)(2,9)(3,11)(5,13)(6,12)(7,14)(8,15)(10,16)(17,20)(18,25)(19,26)(21,29)(22,30)(23,31)(24,32)(27,28)(33,35)(34,38)(36,42)(37,43)(39,46)(40,41)(44,47)(45,48) involution — undirected(1,5,6,8)(2,3,7,10)(4,13,12,15)(9,11,14,16)(17,21,22,24)(18,19,23,27)(20,29,30,32)(25,26,31,28)(33,36)(34,39)(35,42)(37,45)(38,46)(40,44)(41,47)(43,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.